94 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



EXPLANATION OF PLATE 9 



Fig. 1. Exilia diaboli (Gabb), X2. University of Cal. Locality 452. 



Fig. 2a. Exilia perkinsiana (Cooper), X2. Back view of species from 

 Cal. Acad. Sci. Locality 183. 



Fig. 2b. Exilia perkinsiana (Cooper), X2. View showing canal and 

 body whorl of a specimen from Cal. Acad. Sci. Locality 183. 



Fig. 3. Exilia waringi, new species, X3. Type. Cal. Acad. Sci. Locality 

 244. 



Fig. 4. Nyctilochus cowlitzensis (Weaver), XI. Cotype. Cal. Acad. 

 Sci. Locality 182. 



Fig. 5a. Whitneya ficus Gabb, X2. Back view of a young individual 

 showing strong axial ribs. 



Fig. 5h. Whitneya ficus Gabb, X2. Mouth view of second member of 

 a series illustrating the axial ribs in the vicinity of the inner lip. The rest 

 of the body whorl is smooth. 



Fig. 5c. Whitneya ficus Gabb, XI. View showing a mature individual. 

 This series showing stages of growth was collected at Cal. Acad. Sci. 

 Locality 245. 



Fig. 5d. Whitneya ficus Gabb, XI. 



Fig. 6a. Murex packardi, new species, Xl. Aperture view of type. 



Fig. 6b. Murex packardi, new species, XI. Back view of type. 



Fig. 7a. Urosalpinx hannibali, ne,w species, X2. Aperture view of type. 



Fig 7b. Urosalpinx hannibali, new species, X2. Back view of type. 



Fig. 8. Fusus washingtoniana Weaver, XI. 



Fig. 9. Exilia dickersoni (Weaver), XI. 



